Inorganic Qualitative Analysis

Question 1

What is used to test for carbonate ions

Answer 1

Dilute nitric acid

Question 2

Observation in the carbonate ion test

Answer 2

Bubbles/effervescence (of CO2)

Question 3

What is used to test for sulphate ions

Answer 3

Aqueous barium ions e.g Barium Nitrate (aq)

Question 4

Observation in the sulphate ion test

Answer 4

White precipitate

Question 5

What is used to test for halide ions

Answer 5

Silver nitrate solution (aq)

Question 6

Reason why nitric acid is added to halide ions at the start of the test

Answer 6

To remove carbonate ions

Question 7

Initial observation in the bromide ion test

Answer 7

Cream precipitate

Question 8

Initial observation in the iodide ion test

Answer 8

Yellow precipitate

Question 9

The test for ammonium ions involves warming with …..

Answer 9

Gas produced in the ammonium ion test

Question 10

Gas produced in the ammonium ion test

Answer 10

Ammonia / NH3(g)

Question 11

Observation when the gas produced in the ammonium ions test is tested

Answer 11

Damp red litmus paper turns blue

Question 12

Correct order for the anion tests on unknown substances

Answer 12

Carbonate - Sulfate - Halide